Hmmm. Let me see. ok, I'm going to cheat and ask two questions. One for readers in the middle of the series, and one for advanced readers (who have finished the series so far)
1. What is the name of the Aeil whom Rand sees whilst he makes his journy through the ter'angreal in Rhuidean on the way to becoming a clan chief?
and,
2. What is the nickname that the Seachan give to Mat in Ebou Dar?

very good. Sorry peoples, maybe i should have explained the 1st question a bit better.
Nienor is correct, "toy" was the nickname given to matt by the seanchan.
Gamemaster is also correct- Muradin was the only other living aeil, who was also passing through rhuidean to become a clan chief, that rand saw.
Nienor and gamemaster can each ask a question.